• free of cavities
• maintenance free - self lubricating
• mounting-flange for actuators acc. to DIN ISO 5211
• easy accessible adjustment of the plug
• vacuum tight
• TA - Luft 2002 approval
• Firesafe - Design API 607 / ISO 10497 (outside)
• DVGW - approval

"temperature range upto 270°C" 
"with special-PTFE sleeve upto approx. 320°C
(Peak temp. till 366°C)" 
 
 
More information about the F-4 / F-5 ISO - STANDARD Plug-Valve